1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.messaging.jmx;
24  
25  import com.liferay.portal.kernel.messaging.Destination;
26  import com.liferay.portal.kernel.messaging.DestinationStatistics;
27  
28  import javax.management.MalformedObjectNameException;
29  import javax.management.ObjectName;
30  
31  /**
32   * <a href="DestinationStatisticsManager.java.html"><b><i>View Source</i></b>
33   * </a>
34   *
35   * @author Michael C. Han
36   * @author Brian Wing Shun Chan
37   */
38  public class DestinationStatisticsManager
39      implements DestinationStatisticsManagerMBean {
40  
41      public static ObjectName createObjectName(String destinationName) {
42          try {
43              return new ObjectName(_OBJECT_NAME_PREFIX + destinationName);
44          }
45          catch (MalformedObjectNameException mone) {
46              throw new IllegalStateException(mone);
47          }
48      }
49  
50      public DestinationStatisticsManager(Destination destination) {
51          _destination = destination;
52      }
53  
54      public int getActiveThreadCount() {
55          if (_autoRefresh) {
56              refresh();
57          }
58  
59          return _destinationStatistics.getActiveThreadCount();
60      }
61  
62      public int getCurrentThreadCount() {
63          if (_autoRefresh || (_destinationStatistics == null)) {
64              refresh();
65          }
66  
67          return _destinationStatistics.getCurrentThreadCount();
68      }
69  
70      public int getLargestThreadCount() {
71          if (_autoRefresh || (_destinationStatistics == null)) {
72              refresh();
73          }
74  
75          return _destinationStatistics.getLargestThreadCount();
76      }
77  
78      public String getLastRefresh() {
79          return String.valueOf(_lastRefresh);
80      }
81  
82      public int getMaxThreadPoolSize() {
83          if (_autoRefresh || (_destinationStatistics == null)) {
84              refresh();
85          }
86  
87          return _destinationStatistics.getMaxThreadPoolSize();
88      }
89  
90      public int getMinThreadPoolSize() {
91          if (_autoRefresh || (_destinationStatistics == null)) {
92              refresh();
93          }
94  
95          return _destinationStatistics.getMinThreadPoolSize();
96      }
97  
98      public long getPendingMessageCount() {
99          if (_autoRefresh || (_destinationStatistics == null)) {
100             refresh();
101         }
102 
103         return _destinationStatistics.getPendingMessageCount();
104     }
105 
106     public long getSentMessageCount() {
107         if (_autoRefresh || (_destinationStatistics == null)) {
108             refresh();
109         }
110 
111         return _destinationStatistics.getSentMessageCount();
112     }
113 
114     public boolean isAutoRefresh() {
115         return _autoRefresh;
116     }
117 
118     public void refresh() {
119         if (System.currentTimeMillis() > _lastRefresh) {
120             _lastRefresh = System.currentTimeMillis();
121             _destinationStatistics = _destination.getDestinationStatistics();
122         }
123     }
124 
125     public void setAutoRefresh(boolean autoRefresh) {
126         _autoRefresh = autoRefresh;
127     }
128 
129     private static final String _OBJECT_NAME_PREFIX =
130         "Liferay:product=Portal,type=MessagingDestinationStatistics,name=";
131 
132     private boolean _autoRefresh;
133     private Destination _destination;
134     private long _lastRefresh;
135     private DestinationStatistics _destinationStatistics;
136 
137 }